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up vote 12 down vote favorite
3

I need to convert JSON object string to a JavaScript array.

This my JSON object:

{"2013-01-21":1,"2013-01-22":7}

And I want to have:

var data = new google.visualization.DataTable();
data.addColumn('string', 'Topping');
data.addColumn('number', 'Slices');

data.addRows([
    ['2013-01-21', 1],
    ['2013-01-22', 7]
]);

How can I achieve this?

share|improve this question
    
Cheating -> string.split(',') –  adeneo Jan 25 '13 at 18:53
    
@adeneo he wants array in array, with your method it will be just one array –  salexch Jan 25 '13 at 18:55

3 Answers 3

up vote 13 down vote accepted 
var json_data = {"2013-01-21":1,"2013-01-22":7};
var result = [];

for(var i in json_data)
    result.push([i, json_data [i]]);


var data = new google.visualization.DataTable();
data.addColumn('string', 'Topping');
data.addColumn('number', 'Slices');
data.addRows(result);

http://jsfiddle.net/MV5rj/

share|improve this answer
    
Thank for your response , –  user1960311 Jan 25 '13 at 19:00
    
@user1960311 you welcome –  salexch Jan 25 '13 at 19:02
    
I would like something like this: 2013-01-21 ==> 1 2013-01-22 ==> 7 (like a hashtable) –  user1960311 Jan 25 '13 at 19:04
    
@user1960311 That's what you have now –  Ian Jan 25 '13 at 19:07
up vote 6 down vote

If you have a well-formed JSON string, you should be able to do

var as = JSON.parse(jstring);

I do this all the time when transfering arrays through AJAX.

share|improve this answer
1  
+1 for JSON.parse(). At this point it has broad browser support: caniuse.com/json –  siliconrockstar Dec 19 '13 at 23:32
up vote 4 down vote 
function json2array(json){
    var result = [];
    var keys = Object.keys(json);
    keys.forEach(function(key){
        result.push(json[key]);
    });
    return result;
}

See this complete explanation: http://book.mixu.net/node/ch5.html

share|improve this answer

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